Remove doom group

Not really useful, and Doom doesn't encourage using the Emacs Customize
interface.

modules/ui/doom-modeline/config.el

@@ -80,8 +80,8 @@ file-name => comint.el")
 ;;
 
 (defgroup +doom-modeline nil
-  ""
-  :group 'doom)
+  "TODO"
+  :group 'faces)
 
 (defface doom-modeline-buffer-path
   '((t (:inherit (mode-line-emphasis bold))))

modules/ui/doom/config.el

@@ -41,7 +41,7 @@
       (((background light))
        (:inherit font-lock-comment-face :background ,(doom-color 'base3))))
     "Face to hightlight `hideshow' overlays."
-    :group 'doom)
+    :group 'doom-themes)
 
   ;; Nicer code-folding overlays (with fringe indicators)
   (defun +doom-set-up-overlay (ov)